2303231440 has 40 divisors (see below), whose sum is σ = 5357369160. Its totient is φ = 920887296.

The previous prime is 2303231429. The next prime is 2303231443. The reversal of 2303231440 is 441323032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 134652816 + 2168578624 = 11604^2 + 46568^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2303231443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232672 + ... + 242368.

It is an arithmetic number, because the mean of its divisors is an integer number (133934229).

Almost surely, 2^2303231440 is an apocalyptic number.

2303231440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2303231440 is an abundant number, since it is smaller than the sum of its proper divisors (3054137720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2303231440 is a wasteful number, since it uses less digits than its factorization.

2303231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12679 (or 12673 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 2303231440 is about 47991.9934989160. The cubic root of 2303231440 is about 1320.6240238961.

Adding to 2303231440 its reverse (441323032), we get a palindrome (2744554472).

The spelling of 2303231440 in words is "two billion, three hundred three million, two hundred thirty-one thousand, four hundred forty".